Fix for bug#21476: stack overflow crashes server; error-message

stack reservation too small

Problem: some tests fail on HP-UX due to insufficient stack reservation.

Fix: increase stack reservation.


sql/mysql_priv.h:
  Fix for bug#21476: stack overflow crashes server; error-message
  stack reservation too small
    - raised STACK_MIN_SIZE to pass execution_constants.test on HP-UX.

sql/mysql_priv.h

@@ -282,16 +282,12 @@ class Default_object_creation_ctx : public Object_creation_ctx
 */
 #define TABLE_DEF_CACHE_MIN     256
 
-/* 
- Value of 9236 discovered through binary search 2006-09-26 on Ubuntu Dapper
- Drake, libc6 2.3.6-0ubuntu2, Linux kernel 2.6.15-27-686, on x86.  (Added 
- 100 bytes as reasonable buffer against growth and other environments'
- requirements.)
-
- Feel free to raise this by the smallest amount you can to get the
- "execution_constants" test to pass.
- */
-#define STACK_MIN_SIZE          12000   ///< Abort if less stack during eval.
+/*
+  Stack reservation.
+  Feel free to raise this by the smallest amount you can to get the
+  "execution_constants" test to pass.
+*/
+#define STACK_MIN_SIZE          16000   // Abort if less stack during eval.
 
 #define STACK_MIN_SIZE_FOR_OPEN 1024*80
 #define STACK_BUFF_ALLOC        352     ///< For stack overrun checks